tdigest_merge() (toplama işlevleri)

Makale
01/10/2024

Tdigest sonuçlarını grup genelinde birleştirir.

Not

Bu işlev summarize işleciyle birlikte kullanılır.

Temel algoritma (T-Digest) ve tahmini hata hakkında daha fazla bilgi için bkz. yüzdebirlik dilimlerdeki tahmin hatası.

tdigest_merge() ve merge_tdigest() işlevleri eşdeğerdir

Önemli

tdigest() ve tdigest_merge() sonuçları depolanabilir ve daha sonra alınabilir. Örneğin, günlük yüzdebirlik dilimler özeti oluşturmak isteyebilirsiniz. Bu özet daha sonra haftalık yüzdebirlik dilimleri hesaplamak için kullanılabilir. Ancak, bu sonuçların kesin ikili gösterimi zaman içinde değişebilir. Bu işlevlerin özdeş girişler için aynı sonuçları üreteceğinin garantisi yoktur ve bu nedenle bunlara güvenmeyi önermiyoruz.

Syntax

tdigest_merge(ifade)

Söz dizimi kuralları hakkında daha fazla bilgi edinin.

Parametreler

Ad	Tür	Gerekli	Açıklama
ifade	`string`	✔️	Toplama hesaplaması için kullanılan ifade.

Döndürülenler

Grup genelinde ifadenin birleştirilmiş tdigest değerlerini döndürür.

Not

Sonuçlardan yüzdebirlik dilimleri tdigest_merge hesaplamak için percentile_tdigest() işlevini kullanın.
Aynı gruba dahil edilen tüm tdigest'ler aynı türde olmalıdır.

Örnek

Sorguyu çalıştır

StormEvents
| summarize PreAggDamageProperty=tdigest(DamageProperty) by State
| summarize tdigest_merge(PreAggDamageProperty)

Çıkış

merge_tdigests_PreAggDamageProperty
[[7],[ 91,30,73667,966,110000000,24428,2500,20000,16500000,6292,40000,123208,1000000,133091,90583,20000000,977000,20007,547000,19000000,1221,9600000,300000,70072,55940,75000,417500,1410000,20400000,331500,15000000,62000000,50222,121690000,160400,6200000,252500,450,11000000,2200000,5700000,11566,12000000,263,50000,200000,3700000,13286,171000,100000000,28200000,65000000,17709,30693,16000000,7938,5200,2875,1500000,3480000,151100000,9800000,18200000,21600000,199,2570000,30000000,38000000,72000,891250,500000000,26385,80092,27000000,35000000,754500,11500000,3262500,113945,5000,62429,175294,9071,6500000,3321,15159,21850000,300000000,22683,3000,10000000,60055,600000,52000000,496000,15000,50000000,10140000,11900000,2100000,62600000,77125,310667,70000000,101000000,2088,1608571,19182,400000,179833,775000,612000,150000000,13500000,2600000,1250000,65400,45000000,297000,2500000,40000000,24846,30000,59067,1893,15762,142571,220666,195000,2000000,355000,2275000,6000000,46000000,38264,50857,4002,97333,27750,1000,1111429,7043,272500,455200,503,37500000,10000,1489,0,1200000,110538,60000000,250000,10730,1901429,291000,698750,649000,2716667,137000000,6400000,29286,41051,6850000,102000,4602,80000000,250000000,371667,8000000,729,8120000,5000000,20830,152400,803300,349667,202000,207000,81150000,48000000,750000,26000000,8900000,239143,75000000,248000,14342,74857,5992,500000,150000,938000,10533333,45248,105000000,7000000,35030,4000000,2000,7692500,3000000,25000000,4500000,87222,12054,100000,25000,9771,4840000,28000000,1307143,32024],[ 19,1,3,32,1,14,45,572,1,51,126,41,101,11,12,8,2,14,4,1,27,1,58,42,20,177,6,4,1,12,10,2,9,1,5,1,2,28,3,6,1,23,4,30,610,145,1,21,4,2,1,1,24,13,1,153,5,4,26,5,1,6,1,1,28,1,5,1,11,4,1,13,44,2,4,2,1,4,9,1672,7,17,47,2,39,17,2,1,17,666,16,71,21,3,1,530,10,1,1,2,1,4,6,4,1,20,7,11,40,6,2,1,1,2,1,3,5,2,1,21,2,13,271,3,14,23,7,15,2,41,1,2,7,1,27,7,205,3,4,1403,7,69,4,10,215,1,1472,127,45756,10,13,1,198,17,7,1,12,7,6,1,1,14,7,2,2,17,1,2,3,2,48,5,21,10,5,10,21,4,5,1,2,39,2,2,7,1,1,22,7,60,175,119,3,3,40,1,8,101,15,1135,4,22,3,3,9,76,430,611,12,1,2,7,8]]

merge_tdigests_PreAggDamageProperty

[[7],[ 91,30,73667,966,110000000,24428,2500,20000,16500000,6292,40000,123208,1000000,133091,90583,20000000,977000,20007,547000,19000000,1221,9600000,300000,70072,55940,75000,417500,1410000,20400000,331500,15000000,62000000,50222,121690000,160400,6200000,252500,450,11000000,2200000,5700000,11566,12000000,263,50000,200000,3700000,13286,171000,100000000,28200000,65000000,17709,30693,16000000,7938,5200,2875,1500000,3480000,151100000,9800000,18200000,21600000,199,2570000,30000000,38000000,72000,891250,500000000,26385,80092,27000000,35000000,754500,11500000,3262500,113945,5000,62429,175294,9071,6500000,3321,15159,21850000,300000000,22683,3000,10000000,60055,600000,52000000,496000,15000,50000000,10140000,11900000,2100000,62600000,77125,310667,70000000,101000000,2088,1608571,19182,400000,179833,775000,612000,150000000,13500000,2600000,1250000,65400,45000000,297000,2500000,40000000,24846,30000,59067,1893,15762,142571,220666,195000,2000000,355000,2275000,6000000,46000000,38264,50857,4002,97333,27750,1000,1111429,7043,272500,455200,503,37500000,10000,1489,0,1200000,110538,60000000,250000,10730,1901429,291000,698750,649000,2716667,137000000,6400000,29286,41051,6850000,102000,4602,80000000,250000000,371667,8000000,729,8120000,5000000,20830,152400,803300,349667,202000,207000,81150000,48000000,750000,26000000,8900000,239143,75000000,248000,14342,74857,5992,500000,150000,938000,10533333,45248,105000000,7000000,35030,4000000,2000,7692500,3000000,25000000,4500000,87222,12054,100000,25000,9771,4840000,28000000,1307143,32024],[ 19,1,3,32,1,14,45,572,1,51,126,41,101,11,12,8,2,14,4,1,27,1,58,42,20,177,6,4,1,12,10,2,9,1,5,1,2,28,3,6,1,23,4,30,610,145,1,21,4,2,1,1,24,13,1,153,5,4,26,5,1,6,1,1,28,1,5,1,11,4,1,13,44,2,4,2,1,4,9,1672,7,17,47,2,39,17,2,1,17,666,16,71,21,3,1,530,10,1,1,2,1,4,6,4,1,20,7,11,40,6,2,1,1,2,1,3,5,2,1,21,2,13,271,3,14,23,7,15,2,41,1,2,7,1,27,7,205,3,4,1403,7,69,4,10,215,1,1472,127,45756,10,13,1,198,17,7,1,12,7,6,1,1,14,7,2,2,17,1,2,3,2,48,5,21,10,5,10,21,4,5,1,2,39,2,2,7,1,1,22,7,60,175,119,3,3,40,1,8,101,15,1135,4,22,3,3,9,76,430,611,12,1,2,7,8]]